/*
* Copyright 2011, Mysema Ltd
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.mysema.query.sql.postgres;
import java.sql.Connection;
import com.mysema.query.DefaultQueryMetadata;
import com.mysema.query.QueryFlag.Position;
import com.mysema.query.QueryMetadata;
import com.mysema.query.sql.AbstractSQLQuery;
import com.mysema.query.sql.Configuration;
import com.mysema.query.sql.PostgresTemplates;
import com.mysema.query.sql.RelationalPath;
import com.mysema.query.sql.SQLOps;
import com.mysema.query.sql.SQLQuery;
import com.mysema.query.sql.SQLTemplates;
/**
* PostgresQuery provides Postgres related extensions to SQLQuery
*
* @author tiwe
* @see SQLQuery
*
*/
public class PostgresQuery extends AbstractSQLQuery<PostgresQuery> {
public PostgresQuery(Connection conn) {
this(conn, new Configuration(new PostgresTemplates()), new DefaultQueryMetadata());
}
public PostgresQuery(Connection conn, SQLTemplates templates) {
this(conn, new Configuration(templates), new DefaultQueryMetadata());
}
public PostgresQuery(Connection conn, Configuration configuration) {
this(conn, configuration, new DefaultQueryMetadata());
}
public PostgresQuery(Connection conn, Configuration configuration, QueryMetadata metadata) {
super(conn, configuration, metadata);
}
/**
* @return
*/
public PostgresQuery forShare() {
return addFlag(SQLOps.FOR_SHARE_FLAG);
}
/**
* @return
*/
public PostgresQuery noWait() {
return addFlag(SQLOps.NO_WAIT_FLAG);
}
/**
* @param paths
* @return
*/
public PostgresQuery of(RelationalPath<?>... paths) {
StringBuilder builder = new StringBuilder(" of ");
for (RelationalPath<?> path : paths) {
if (builder.length() > 4) {
builder.append(", ");
}
builder.append(getConfiguration().getTemplates().quoteIdentifier(path.getTableName()));
}
return addFlag(Position.END, builder.toString());
}
@Override
public PostgresQuery clone(Connection conn) {
PostgresQuery q = new PostgresQuery(conn, getConfiguration(), getMetadata().clone());
q.clone(this);
return q;
}
}